OF COURSE
No it can't and won't hurt anything, It will just lay on the bottom of the tank.
You have to drop gas tank. Take gas tank off vehicle and drain it. Make sure your gas tank is almost empty due to it will be very heavy if full. You may even get hurt.
if you mix the ratio right with the gas it will boost power to engine as far as hurting engine i cant see why it would hurt it .
It can burn a little smokey but that really wont hurt your motor. If you are worried about burning old gas just get an octain booster and add it to the tank of gas.
In the gas tank In the gas tank In the gas tank In the gas tank In the gas tank
Yes, yogurt is a by-product of cows milk.
Depends on how you get it out. If possible the tank should be drained and the lines disconected and flushed. If you can drain or syphon the tank on a modern fuel injected car the system should circulate the bad gas back to the tank in just a minute or two when trying to start the car. REMEMBER this will not work unless the tank has new good gas in it. The amount of bad gas in the lines should not hurt the new gas as long as you have a Half tank or more of new gas.
It could make him very sick.
yes
yes it is a very big concern! ITS IMPOSSIBLE FOR THAT TO FIT IN THE LITTLE HOLE, BUT IF ITS A SMALL CAP IT SHOULDN'T HURT ANY THING.
on the gas tank
You can stop a leaking gas tank, by making a paste of soap on the hole of the gas tank.